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Finding the Fourth Proportional to 287,604.57, 396,895.64 and 166,817.37

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Solution

The fourth proportional to 287,604.57, 396,895.64 and 166,817.37 is: 230,208.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,604.57 : 396,895.64 = 166,817.37 : x
  2. Step 2: Convert to fraction form
    287,604.57/396,895.64 = 166,817.37/x
  3. Step 3: Cross multiply
    287,604.57x = 396,895.64 × 166,817.37
  4. Step 4: Simplify right side
    287,604.57x = 66,209,085,995.18
  5. Step 5: Solve for x
    x = 66,209,085,995.18/287,604.57
  6. Step 6: Final answer
    x = 230,208.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.